公开(公告)号：WO2009101417A1

公开(公告)日：2009-08-20

申请号：PCT/GB2009/000404

申请日：2009-02-12

Applicant: ZINWAVE LIMITED ,  GEARS, Trevor ,  BOZ, Zafer ,  HOWE, Graham, Ronald ,  MEZZAROBBA, Emiliano ,  FREEMAN, Benedict, Russell ,  BELL, Andrew, Robert

Inventor： GEARS, Trevor ,  BOZ, Zafer ,  HOWE, Graham, Ronald ,  MEZZAROBBA, Emiliano ,  FREEMAN, Benedict, Russell ,  BELL, Andrew, Robert

IPC: H01Q1/52 ,  H01Q1/24

CPC classification number: H01Q1/525 ,  H01Q1/246

Abstract: A distributed antenna system (DAS) is described, including a wide band antenna device having respective transmit and receive antennas disposed in a single package and arranged to provide mutual isolation so that in use noise from the transmit antenna is isolated from the transmit antenna, whereby reception is possible at a frequency the same as transmission.

Abstract translation: 描述了分布式天线系统（DAS），其包括具有设置在单个封装中的相应发射和接收天线的宽带天线装置，并且被布置成提供相互隔离，使得在使用中，来自发射天线的噪声与发射天线隔离，由此 在与发送相同的频率下可以进行接收。

公开(公告)号：WO1997043836A1

公开(公告)日：1997-11-20

申请号：PCT/GB1997001340

申请日：1997-05-16

Applicant: NORTHERN TELECOM LIMITED ,  FREEMAN, Benedict, Russell

Inventor： NORTHERN TELECOM LIMITED

IPC: H04B03/54

CPC classification number: H04B3/542 ,  H04B2203/5433 ,  H04B2203/5437 ,  H04B2203/5441 ,  H04B2203/545 ,  H04B2203/5458 ,  H04B2203/5466 ,  H04B2203/5483 ,  H04B2203/5491

Abstract: Telecommunications signals are carried on a cable (111) which carries mains electricity to a consumers' premises. A signal coupler (SC) and a subscribers' interface unit (SIU) are provided between the mains cable (111) and conventional subscribers' terminal equipment (25A, 25B, 25C) adapted for full duplex communication with a local telephone exchange. The subscribers' interface unit SIU converts telecommunications signals between this duplex form (typically analogue at audio frequencies) and time division duplex (TDD) form at a carrier frequency in the range 1 MHz to 20 MHz for coupling to the mains cable (111). In the example, TDD interface means (40) provides cordless telephony digital standard formatting/deformatting and modulating/demodulating at a carrier in the band 864 MHz to 868 MHz, and a frequency converter (50) converts between this band and, typically, 2 MHz to 6 MHz.

Abstract translation: 电信信号在电缆（111）上承载，电缆承载主电力到消费者的房屋。 在主电缆（111）和适于与本地电话交换机全双工通信的常规用户终端设备（25A，25B，25C）之间提供信号耦合器（SC）和用户接口单元（SIU）。 订户的接口单元SIU在1MHz至20MHz范围内的载波频率上将该双工形式之间的通信信号（通常以音频频率模拟）和时分双工（TDD）形式转换成耦合到电源电缆（111）。 在该示例中，TDD接口装置（40）在864MHz至868MHz的频带的载波上提供无绳电话数字标准格式化/去格式化和调制/解调，并且频率转换器（50）在该频带和典型地为2 MHz至6 MHz。

公开(公告)号：WO2003088595A2

公开(公告)日：2003-10-23

申请号：PCT/GB2003/001477

申请日：2003-04-03

Applicant: CAMBRIDGE BROADBAND LIMITED ,  PORTER, John, David ,  FREEMAN, Benedict, Russell

Inventor： PORTER, John, David ,  FREEMAN, Benedict, Russell

IPC: H04L12/56

CPC classification number: H04L12/5601 ,  H04J3/0632 ,  H04J3/0658 ,  H04J2203/0035 ,  H04J2203/005 ,  H04L2012/5607 ,  H04L2012/5616 ,  H04L2012/5649 ,  H04L2012/5652

Abstract: A packet switched communications system for transmitting synchronous data from a source module (4) to a terminating module (8) over a network comprises plurality of modules (4, 5, 7, 8) interconnected via transmission links (2, 6, 9). Each module operates with a clock of nominal frequency but which is not synchronised with the clocks of the other module(s) and has a single input and one or more outputs where all the outputs are phase locked to each other but are not synchronised with respect to the input. The system includes means (405, 504, Figures 4 and 5) for determining the accumulated phase difference between the input clock and the output clock of each module, and means (5, 7) for transmitting the accumulated phase difference to the terminating module (8) in the network. The received accumulated phase difference at the terminating module (8) is used to lock the output clock at the terminating module to the input clock at the source module.

Abstract translation: 用于通过网络从源模块（4）向终端模块（8）发送同步数据的分组交换通信系统包括经由传输链路（2,6,9）互连的多个模块（4,5,7,8） 。 每个模块以标称频率的时钟工作，但不与另一个模块的时钟同步，并且具有单个输入和一个或多个输出，其中所有输出彼此相位锁定，但不相关 到输入。 该系统包括用于确定每个模块的输入时钟和输出时钟之间的累积相位差的装置（405,504，图4和5）以及用于将累积相位差发送到终端模块的装置（5,7） 8）在网络中。 在端接模块（8）处接收到的累积相位差用于将端接模块处的输出时钟锁定到源模块的输入时钟。

公开(公告)号：WO2003088595A3

公开(公告)日：2003-10-23

申请号：PCT/GB2003/001477

申请日：2003-04-03

Applicant: CAMBRIDGE BROADBAND LIMITED ,  PORTER, John, David ,  FREEMAN, Benedict, Russell

Inventor： PORTER, John, David ,  FREEMAN, Benedict, Russell

IPC: H04J3/06

Abstract: A packet switched communications system for transmitting synchronous data from a source module (4) to a terminating module (8) over a network comprises plurality of modules (4, 5, 7, 8) interconnected via transmission links (2, 6, 9). Each module operates with a clock of nominal frequency but which is not synchronised with the clocks of the other module(s) and has a single input and one or more outputs where all the outputs are phase locked to each other but are not synchronised with respect to the input. The system includes means (405, 504) for determining the accumulated phase difference between the input clock and the output clock of each module, and means (5, 7) for transmitting the accumulated phase difference to the terminating module (8) in the network. The received accumulated phase difference at the terminating module (8) is used to lock the output clock at the terminating module to the input clock at the source module.

公开(公告)号：WO0078062A3

公开(公告)日：2001-04-26

申请号：PCT/GB0002242

申请日：2000-06-09

Applicant: ADAPTIVE BROADBAND LTD ,  PORTER JOHN DAVID ,  VESTER WALTER CHARLES ,  FREEMAN BENEDICT RUSSELL

Inventor： PORTER JOHN DAVID ,  VESTER WALTER CHARLES ,  FREEMAN BENEDICT RUSSELL

IPC: H04L12/70 ,  H04W16/04 ,  H04W16/10 ,  H04W16/12 ,  H04W16/24 ,  H04Q7/36 ,  H04L29/06 ,  H04Q11/04

CPC classification number: H04W16/04 ,  H04L2012/5607 ,  H04L2012/5625 ,  H04L2012/563 ,  H04L2012/5672 ,  H04W8/24 ,  H04W16/10 ,  H04W16/12 ,  H04W16/24 ,  H04W24/00 ,  H04W72/0453 ,  H04W72/082 ,  H04W72/085

Abstract: A dynamic channel allocation method and system for use in a wireless network operates by monitoring at least the allocated channel allocated to a particular network node to generate one or more channel metrics relating to radio conditions on the channel. The metrics generated are received signal power, signal to noise ratio of transmissions on the network and long-term mean square of the equaliser error used in each terminal. The generated metrics are communicated back to the cell access point or the network control server over a signalling channel, and a new frequency is allocated to the cell if it is determined from the metrics that the presently allocated channel is suffering interference. Th signalling channel is preferably an ATM VPI/VCI pair, such that signalling messages are transmitted as ATM cells which can be communicated across the wireless channel using the sane signalling frame as is used for payload cells.

Abstract translation: 用于无线网络的动态信道分配方法和系统通过至少监视分配给特定网络节点的分配信道来生成与该信道上的无线电条件有关的一个或多个信道度量来进行操作。 生成的度量是接收信号功率，网络上传输的信噪比和每个终端中使用的均衡器误差的长期均方。 所生成的度量通过信令信道被传送回小区接入点或网络控制服务器，如果从该度量确定当前分配的信道正在遭受干扰，则将新频率分配给小区。 Th信令信道优选地是ATM VPI / VCI对，使得信令消息作为ATM信元被发送，ATM信元可以使用与用于有效载荷信元的信元相同的信号通过无线信道进行传送。